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Schorl-(F) Mineral Data
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General Schorl-(F) Information
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 Chemical Formula: |
NaFe++3Al6Si6O18)(BO3)3(OH)3(F,OH) |
| Composition: |
Molecular Weight = 1,028.43 gm |
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Potassium 0.04 % K 0.05 % K2O |
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Sodium 1.74 % Na 2.35 % Na2O |
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Magnesium 0.05 % Mg 0.08 % MgO |
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Titanium 0.09 % Ti 0.16 % TiO2 |
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Manganese 0.69 % Mn 0.90 % MnO |
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Aluminum 16.84 % Al 31.82 % Al2O3 |
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Zinc 0.13 % Zn 0.16 % ZnO |
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Iron 12.38 % Fe 13.20 % FeO / 3.03 % Fe2O3 |
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Silicon 16.11 % Si 34.47 % SiO2 |
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Boron 3.15 % B 10.15 % B2O3 |
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Hydrogen 0.32 % H 2.84 % H2O |
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Oxygen 47.04 % O |
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Fluorine 1.40 % F 1.40 % F |
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- %
F -0.59 % -O=F2 |
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______ ______ |
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100.00 % 100.02 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.78K0.01Fe2+1.89Al0.58Fe3+0.13Mn2+0.13Ti0.02Mg0.02Zn0.02Al5.74Fe3+0.26Si5.9
Al0.1O18(BO3)3(OH)3F0.76(OH)0.24 |
| Environment: |
Pegmatites. |
| IMA Status: |
Not Submitted IMA (Dana # Added) |
| Locality: |
Grasstein, Sachsenklemme, Trentino, South Tyrol, Italy, in pegmatites from the Permian Brixener granite. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the F analog of the hydroxyl end-member schorl, in the tourmaline group. |
| Name Pronunciation: |
Schorl-(F)  |
| Synonym: |
Tourmaline |
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